LXR linux/drivers/pcmcia/rsrc

   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * rsrc_mgr.c -- Resource management routines and/or wrappers
   4 *
   5 * The initial developer of the original code is David A. Hinds
   6 * <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
   7 * are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
   8 *
   9 * (C) 1999             David A. Hinds
  10 */
  11
  12#include <linux/slab.h>
  13#include <linux/module.h>
  14#include <linux/kernel.h>
  15
  16#include <pcmcia/ss.h>
  17#include <pcmcia/cistpl.h>
  18#include "cs_internal.h"
  19
  20int static_init(struct pcmcia_socket *s)
  21{
  22        /* the good thing about SS_CAP_STATIC_MAP sockets is
  23         * that they don't need a resource database */
  24
  25        s->resource_setup_done = 1;
  26
  27        return 0;
  28}
  29
  30struct resource *pcmcia_make_resource(resource_size_t start,
  31                                        resource_size_t end,
  32                                        unsigned long flags, const char *name)
  33{
  34        struct resource *res = kzalloc(sizeof(*res), GFP_KERNEL);
  35
  36        if (res) {
  37                res->name = name;
  38                res->start = start;
  39                res->end = start + end - 1;
  40                res->flags = flags;
  41        }
  42        return res;
  43}
  44
  45static int static_find_io(struct pcmcia_socket *s, unsigned int attr,
  46                        unsigned int *base, unsigned int num,
  47                        unsigned int align, struct resource **parent)
  48{
  49        if (!s->io_offset)
  50                return -EINVAL;
  51        *base = s->io_offset | (*base & 0x0fff);
  52        *parent = NULL;
  53
  54        return 0;
  55}
  56
  57
  58struct pccard_resource_ops pccard_static_ops = {
  59        .validate_mem = NULL,
  60        .find_io = static_find_io,
  61        .find_mem = NULL,
  62        .init = static_init,
  63        .exit = NULL,
  64};
  65EXPORT_SYMBOL(pccard_static_ops);
  66
  67
  68MODULE_AUTHOR("David A. Hinds, Dominik Brodowski");
  69MODULE_LICENSE("GPL");
  70MODULE_ALIAS("rsrc_nonstatic");
  71